James e



No Model.) l

, J. R'. TAYLR 8E P. LCKWOD.

COMBINED DUST `CA'GIEER AND SEPARATGR PGB. MIDLINGS PURIPIBRS.

I WELT wim ivrrnn tirarse Warnier @erica JAMES R. TAYLOR AND PETER LOCKVOD, 0F MARSHALL, MICHIGAN.

COMBINED DUST CATCHER AND SEPARATOR FOR PlllDDLlNGS-PURIFIE-S.

SPECJ'IFECATION forming part of Letters Patent No. 325,713, dated September 8, 1885.

Application filed December 4, 1811.4.

(No model.)

T0 @ZZ whom, t may concern:

Be it known that weJnMns R. 'Partony and PETER LooKwooD, both of the city of Man shall, in the county of Calhoun and State of Michigan, have invented certain new and useful improvements in GombinedDust Catchers and separators for Middlings-Puriliers; and we do hereby declare that the following is a full', clear, and exact description of theinvention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompniying dran-ings, and to letters of reference marked thereon, which form a part of this i specification.

Our invention has for its object to provide new and useful improvements in combined dust catchers and separators for middlingspurifiers, andthe novelty thereof consists, essentially, in the details of construction and general arrangement of partsjas will be hereinafter fully described, and specifically designated in the claims.

Figure l is an upright side view of our in- V vention, parts of the cylinder being broken away. Fi. 2 is a sectional view in the line Fig. 3 is aseetional view of the dischargespouts in the line ai fr'. Fig. 4 represents a top view of poeketed roller-valve.

Referring to the drawings, A is a section of an induction-tru nk through which the ilour and dust laden air are forced from the purifiers into a cylinder, C, closed at its forward end around saidimlnctiontrunk and opening into a dust-chamber, D, atil's rear end, both being hung in and snit-ably attached to a rectangular frame, B. The end and twosides of the dustchamber are lined with sheeting d, for the purpose of allowing the air forced through the cylinder' C to escape, while retaining the dust, which, being lighter than the ilonr, is alone `forced to the rear end of the machine. TWe provide the dust-chamber with a detachable door, D.

H and I are rectangular discharge-sponts, fastened on the under side and near each end ol' said cylinder C.

the shaft F, extends from the dust-chamber D to about the center of the flour-spout H, The outer edge of said conveyor we lag with Wool Or other material for making a closejoint with The conveyor R, keyed to l l l i said cylinder C. The dour-spontH and dustspont I are each providedwith aroller-valve, It', keyed to the shaft J. The roller-valves we construct with fonrpoeketac, and lag their edges with wool Z), as shown in Figs. 3 and et, in such a manner as to prevent the flour or dust from being blown down the spout and into the air as the rollers revolve. The sprocketchain L connects the two shafts, and O is the driving-wheel keyed to the rear end of the shaft F. In the bottoni j" of the dust-chamber l) we form rectangular openings to correspond with similar openings in the slide f, placed beneath and workingin proper grooves, so that when it becomes necessary the accumulated dnst may be removed into the sliding drawer' T below by simply working the slide.

In the operation of our invention the conveyer is revolved at such rate of speed as to cause the greatest resistance to the free passage of air through the cylinder, the object being to separate the flour from the dust by carrying the flour forward against the draft of air from the middlingspurifier. The liour and dustin the air, as it is forced from thepnritier through the inductiontrunk and cylinder C, strike the smooth surface or" the conveyor R. The Hour particles, being heavier than the dust portions, are lirst retarded in their course and lodge on the conveyor and against the cylinder. As the conveyor revolves, the lagging on its outer edge brushes the ilour oil` from the cylinder and conveys it forward and deposits it in the flour-spout H. As the roller-valve It revolves, the flour is Carried around and deposited in the spout leading to the bolt for reholting. A small amount ol' dust lodges in the rear end or' the cylinder and is conveyed forward in a similar manner tothe dischargespout I; but almost the entire portion of the separated dust passes along the conveyer spirally, and is caught in the dust-chamber and removed therefrom, as heretofore described.

By lengthening the machine and adding another diseharge-spout, two 4grades ot' iiour can be obtained; but we deenr it advisable to make but the one sepa-ration.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

l. The herein described combined dust IOO In testimony that We claim the foregoing as our own We afx our signatures in presence oi two Witnesses.

catcher and separator for middlings-puriers, comprising the cylinder C, discharge-spouts H and I, roller-valves R R, shafts F and J, conveyer It, dust-chamber D, slide f, and drawer T, substantially as and for the purpose hereinbefore set forth.

JAMES R. TAYLOR. PETER LOCKWOOD.

2. The combination of the dust-chamber D, conveyer It, having lagging b, cylinder (Land Witnesses: discharge-spouts I and H, provided with roll- E. J. KIRBY,

er-valves R It', substantially as herein de- O'r'ro L. JOHNSON.

scribed. 

